subproducts tables locking error

Hi
using 5x - fresh install
ecommerce latest stable release
default theme
dependant mods such as token and nothing else

]created a product variation with three attributes,
]When i create content > tangible subproduct - fill in the details - then select varation and 'generate' i have the following error ......

Warning: Table 'system' was not locked with LOCK TABLES query: SELECT * FROM system WHERE type = 'theme' in xxxxxxxxxxxxxx\includes\database.mysql.inc on line 172

Warning: Table 'watchdog' was not locked with LOCK TABLES query: INSERT INTO watchdog (uid, type, message, severity, link, location, referer, hostname, timestamp) VALUES (1, 'php', 'Duplicate entry 'subproducts_ec_live_subproducts_tangible_default' for key 1\nquery: INSERT INTO variable (name, value) VALUES ('subproducts_ec_live_subproducts_tangible_defaults',

any advice appreciated
thnks